The Faxon Firearms Complete Bolt Carrier Group (brand part number FF556BCGCNITRIDE) is a full-assembly BCG built for 5.56 NATO and M16-pattern AR-15 uppers, machined from steel and finished with a nitride coating for added corrosion resistance and smoother cycling than a standard phosphate finish. It ships as a complete, ready-to-install bolt carrier group, an AR-15-compatible accessory built to Faxon’s usual manufacturing standard, and it’s made entirely in the USA. It’s a straightforward drop-in for shooters building or upgrading an AR-15 upper who want a durable, low-maintenance carrier group without sourcing individual internal components separately.

Key Specifications

• Built for 5.56 NATO and M16-pattern AR-15 uppers.
• Machined from steel for durability under repeated cycling.
• Finished with a nitride coating for corrosion resistance and smoother cycling.
• Ships as a complete, ready-to-install bolt carrier group.
• Compatible with standard AR-15 uppers.
• Made entirely in the USA.

Frequently Asked Questions

Is this a complete BCG? Yes, it ships as a complete, ready-to-install bolt carrier group.

What finish does it use? A nitride coating for corrosion resistance and smoother cycling than a standard phosphate finish.

Where is it made? Made entirely in the USA.

Buy the Faxon Firearms Complete Nitride Bolt Carrier Group, 5.56/M16

Upgrade your AR-15 upper with a durable, USA-made nitride BCG. Order it from our Faxon Firearms lineup, part of our AR bolt carrier groups selection, at our Lubbock, Texas gun shop for fast, direct shipping.